diff options
Diffstat (limited to 'drivers/i2c/i2c-dev.c')
-rw-r--r-- | drivers/i2c/i2c-dev.c | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index cb64fe649390..bce0e8bb7852 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c @@ -14,6 +14,8 @@ /* The I2C_RDWR ioctl code is written by Kolja Waschk <waschk@telos.de> */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/cdev.h> #include <linux/compat.h> #include <linux/device.h> @@ -68,8 +70,7 @@ static struct i2c_dev *get_free_i2c_dev(struct i2c_adapter *adap) struct i2c_dev *i2c_dev; if (adap->nr >= I2C_MINORS) { - printk(KERN_ERR "i2c-dev: Out of device minors (%d)\n", - adap->nr); + pr_err("Out of device minors (%d)\n", adap->nr); return ERR_PTR(-ENODEV); } @@ -101,7 +102,7 @@ static ssize_t name_show(struct device *dev, if (!i2c_dev) return -ENODEV; - return sprintf(buf, "%s\n", i2c_dev->adap->name); + return sysfs_emit(buf, "%s\n", i2c_dev->adap->name); } static DEVICE_ATTR_RO(name); @@ -141,16 +142,16 @@ static ssize_t i2cdev_read(struct file *file, char __user *buf, size_t count, if (count > 8192) count = 8192; - tmp = kmalloc(count, GFP_KERNEL); + tmp = kzalloc(count, GFP_KERNEL); if (tmp == NULL) return -ENOMEM; - pr_debug("i2c-dev: i2c-%d reading %zu bytes.\n", - iminor(file_inode(file)), count); + pr_debug("i2c-%d reading %zu bytes.\n", iminor(file_inode(file)), count); ret = i2c_master_recv(client, tmp, count); if (ret >= 0) - ret = copy_to_user(buf, tmp, count) ? -EFAULT : ret; + if (copy_to_user(buf, tmp, ret)) + ret = -EFAULT; kfree(tmp); return ret; } @@ -169,8 +170,7 @@ static ssize_t i2cdev_write(struct file *file, const char __user *buf, if (IS_ERR(tmp)) return PTR_ERR(tmp); - pr_debug("i2c-dev: i2c-%d writing %zu bytes.\n", - iminor(file_inode(file)), count); + pr_debug("i2c-%d writing %zu bytes.\n", iminor(file_inode(file)), count); ret = i2c_master_send(client, tmp, count); kfree(tmp); @@ -673,8 +673,7 @@ static int i2cdev_attach_adapter(struct device *dev, void *dummy) return res; } - pr_debug("i2c-dev: adapter [%s] registered as minor %d\n", - adap->name, adap->nr); + pr_debug("adapter [%s] registered as minor %d\n", adap->name, adap->nr); return 0; } @@ -693,7 +692,7 @@ static int i2cdev_detach_adapter(struct device *dev, void *dummy) put_i2c_dev(i2c_dev, true); - pr_debug("i2c-dev: adapter [%s] unregistered\n", adap->name); + pr_debug("adapter [%s] unregistered\n", adap->name); return 0; } @@ -726,7 +725,7 @@ static int __init i2c_dev_init(void) { int res; - printk(KERN_INFO "i2c /dev entries driver\n"); + pr_info("i2c /dev entries driver\n"); res = register_chrdev_region(MKDEV(I2C_MAJOR, 0), I2C_MINORS, "i2c"); if (res) @@ -754,7 +753,7 @@ out_unreg_class: out_unreg_chrdev: unregister_chrdev_region(MKDEV(I2C_MAJOR, 0), I2C_MINORS); out: - printk(KERN_ERR "%s: Driver Initialisation failed\n", __FILE__); + pr_err("Driver Initialisation failed\n"); return res; } |